Document Type and Number:
Japanese Patent JPS63158097
Kind Code:
U
Application Number:
JP5171587U
Publication Date:
October 17, 1988
Filing Date:
April 06, 1987
Export Citation:
International Classes:
G10K9/122; G10K9/12; G10K9/18; H04R17/10; (IPC1-7): H04R17/10; G10K9/12; G10K9/18